Python program to check if a string contains any unique character

In this tutorial, we are going to write a program that checks whether a string contains any special character or not. It's straightforward in Python.

We will have a set of special characters in the string module. We can use that one to check whether a string contains any special characters or not. Let's see the steps to write the program.

• Import the string module.

• Store the special characters from string.punctuation in a variable.

• Initialize a string.

• Check whether the string has special characters or not using the map function.

• Print the result, whether valid or not.

Example

# importing the string module
import string
# special characters
special_chars = string.punctuation
# initializing a string
string_1 = "Tutori@lspoinT!"
string_2 = "Tutorialspoint"
# checking the special chars in the string_1
bools = list(map(lambda char: char in special_chars, string_1))
print("Valid") if any(bools) else print("Invalid")
# checking the special chars in the string_2
bools = list(map(lambda char: char in special_chars, string_2))
print("Valid") if any(bools) else print("Invalid")

Output

If you run the above program you will get the following result.

Valid
Invalid

Conclusion

You can move the code to a function to avoid the redundancy in the code. If you have any doubts in the tutorial, mention them in the comment section.